/usr/include/x86_64-linux-gnu/lttng/ust-clock.h is in liblttng-ust-dev 2.10.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 | #ifndef LTTNG_UST_CLOCK_H
#define LTTNG_UST_CLOCK_H
/*
* Copyright (C) 2014 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; version 2.1 of
* the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdint.h>
#include <stddef.h>
/*
* Set each callback for the trace clock override, and then enable the
* override. Those functions return negative error values on error, 0 on
* success.
*/
/*
* Set clock override read callback. This callback should return the
* current clock time (a 64-bit monotonic counter).
*/
int lttng_ust_trace_clock_set_read64_cb(uint64_t (*read64)(void));
/*
* Set clock override frequency callback. This callback should return
* the frequency of the clock in cycles per second.
*/
int lttng_ust_trace_clock_set_freq_cb(uint64_t (*freq)(void));
/*
* Set clock override unique identifier.
* LTTNG_UST_UUID_STR_LEN is the maximum length of uuid string. Includes
* final \0.
*/
#define LTTNG_UST_UUID_STR_LEN 37
int lttng_ust_trace_clock_set_uuid_cb(int (*uuid)(char *uuid));
/*
* Set clock override name.
*/
int lttng_ust_trace_clock_set_name_cb(const char *(*name)(void));
/*
* Set clock override description.
*/
int lttng_ust_trace_clock_set_description_cb(const char *(*description)(void));
/*
* Use the clock override rather than the default clock.
*/
int lttng_ust_enable_trace_clock_override(void);
#endif /* LTTNG_UST_CLOCK_H */
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